求助：android 真机JDBC直连mysql报错！！

[_YukiOO]

我现在的情况是电脑开了热点，手机连接了热点。电脑的防火墙都关了。mysql用户的权限设置了，mysql8.0，mysql-connector-java6.0.6，但是有一行代码就是一直报错，弄了一天了还不知道为什么，急求大神帮助！
DriverManager.getConnection("jdbc:mysql://我的ip:3306/bistucampusapp?useSSL=false&serverTimezone=UTC", "username", "123456");

以下是报错内容：

2019-04-26 16:54:09.846 9583-9626/com.hx.bistucampusapp E/AndroidRuntime: FATAL EXCEPTION: Thread-5
Process: com.hx.bistucampusapp, PID: 9583
java.lang.UnsupportedOperationException
at java.util.regex.Matcher.group(Matcher.java:383)
at com.mysql.cj.core.conf.url.ConnectionUrlParser.parseConnectionString(ConnectionUrlParser.java:136)
at com.mysql.cj.core.conf.url.ConnectionUrlParser.<init>(ConnectionUrlParser.java:124)
at com.mysql.cj.core.conf.url.ConnectionUrlParser.parseConnectionString(ConnectionUrlParser.java:113)
at com.mysql.cj.core.conf.url.ConnectionUrl.getConnectionUrlInstance(ConnectionUrl.java:192)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:194)
at java.sql.DriverManager.getConnection(DriverManager.java:569)
at java.sql.DriverManager.getConnection(DriverManager.java:219)
at com.hx.bistucampusapp.LoginActivity$1$1.run(LoginActivity.java:37)